CVE-2025-61951 HIGH

CVE-2025-61951: BIG-IP DTLS 1.2 Vulnerability

Vendor F5
Product BIG-IP
Weakness CWE-125
Published October 15, 2025
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

Undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  This issue may occur when a Datagram Transport Layer Security (DTLS) 1.2 virtual server is enabled with a Server SSL profile that is configured with a certificate, key, and the SSL Sign Hash set to ANY, and the backend server is enabled with DTLS 1.2 and client authentication.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Key dates

02Disclosure timeline

October 15, 2025 CVE published
February 26, 2026 Record updated